Improved compound for removing ink, stains



UNITED STATES PATENT OFFICE. I

VICTOR BLOEDE, OF BROOKLYN, YORK.

" I MPRO VE DCO IlIIPOUND FOR REMOVING INK, STAINS, etc.

Specification forming part of Letters Patent No. 87,088, dated February 23, 1869.

To all whom it may concern! Be it known that I, VICTOR G. BLOEDE, of the city of Brooklyn, county of Kings, and State of N ew'York, have invented a new Com:

' pound and Device for Removing Ink, Iron Rust, Fruit, and other Stains from the hands and clothes; and I do hereby declare that the following is a full and exact description thereof The nature of my invention consists in so mixing or combining the acids (any of them) having an affinity for the salts or compounds scribe the processes employed by me, which.

give the most satisfactory results.

To produce these chemical ink-erasers in crayon form, for public or other school use,

so that they are entirely harmless and devoid of all noxious compounds, I proceed as follows:

As a base, I employ citric or tartaric acid,

1 or both combined, and make a saturated solution of them in boiling water. To this soi lution I add from two to five per cent. of glacial acetic acid and the same quantity of concentrated, chemically pure, hydrochloric acid. The solution is now brought to rapid boiling in a large porcelain evaporating-dish, and,

- under constant and violent stirring, the mixture is boiled nearly to dryness-i. 6., until.

it assumes a pasty or doughy consistence.

-When this result has been attained, a sulficient quantity (ten to twenty-five per cent. by weight) of thick -gum-a-rabic,-or other mucilaginous solution, is added, and tho ebullition continued in a water-bath until the mass has 4 obtained the proper consistence. It is then removed from the heat, and, some pleasant perfume or scent being stirred into it, it is pound or pressed into the molds desired, or

rolled into sticks on a slab of marble. i The object of the acetic and hydrochloric acid is to heighten the erasive power of the substance. They have a peculiar further action, however, of breaking up or preventing crystallization. By these means the crys-" tale of the acid are so broken up that they arereduced to apowder as fine as potatostarch.

For oflice or photographers use, oxalic acid maybe substituted for the others, as its action is somewhat more powerful. The sticks, prepared as above described, in the course of a week or two become as hard and tough, especially if glue be substituted for the whatever form it be, making a most neat, elegant, efficient, and handypocket article, which cannot rub off or stain the clothes in any man- I161.

The damp into a brittle condensed acids may be pressed cake or pencil by merely applyin g a powerful pressure; or the vegetable acids may be finely powdered, and, being mixed with a gummy or mucilaginous solution, they can be pressed or molded into the required shape Without furtherpreparation; but the resulting pencil or crayon is very much inferior to those made as before described. Or the acids may be united by the application of heat and pressure alone. The result, however, is very inferior to the foregoing. I

To use the crayons, proceed simply as follows: Wet or dampen the stain (eitheron the hands or clothes) with water, pencil or crayon, rubbing the substance well upon the stain, which will rapidly and completely disappear.

Instead of using water, the stains may be moistened by the tongue.

I do not claim the use of acids for removing the stains of ink or other salts of iron; but

to secure by Letters Patent, is-

1. An improved and more rapid sol-vent, obtained. as above directed.

2. The compression or solidification of subgum, as soap-stone or slate, thus, in

and apply the What I do claim as my invention, and desire stances having afiinity for stains into era-yon I to make them more convenient to carry in the or pencil shape, or other eonvenientpocket pocket, substantially in the manner and for form, either by the use of gum, heat, pressure, the purpose herein set forth.

or all combined, so that they form a hard, 7 VICTOR G. BLOEDE. tough, soluble mass. Witnesses: 3. The surrounding of such solid crayon or JULIUS SOLGER pencil-erasers by wood, metal, or pasteboard, HENRY ERNI. 

